Help ID Trapdoor Buttplate
I'm trying to ID this unmarked trapdoor buttplate. It came on a Winchester 1885 Highwall in 22 Hornet. The barrel has Springfield Armory markings, is marked 22 Hornet and is stamped 10-31which I believe is October 1931. I've searched the internet but have come up empty and would appreciate any info. Could this be a Springfield Armory build? The buttplate measures 4-7/8" x 1-5/8"